bowers



(No Model.) 3 Sheets-Sheet 1.

E. L. BOWERS & J'. ELTITUS. SLOTTING MACHINE.

- No. 469,323. Patented Feb. 22., 1892.;

' g Ewan?? Z W 7 7 3 S U T I T H m & S R E W 0 B L (No Model.)

Y SLOTTING MACHINE. No. 469,323. Patentedfeb. 28,1892.

(Iio Model.) 3 Sheets-Sheet 3.

E. L. BOWERSK; J. E. TITUS.

SLOTTING MACHINE.

No. 469,323. Patented Feb. 23,1892,

. UNITED STATES PATENT OFFICE.

EDXVARD L. BOVERS AND J ONAH E. TITUS, OF ORANGE, MASSACHUSETTS, ASSIGNORS OF ONE-THIRD TO VILLIAM L. GROUT, OF SAME PLACE.

SLOTTlNG-MACHINE.

SPECIFICATION forming part of Letters Patent No. 469,323, dated February 23, 1892. Application filed March 30, 1891. Serial No. 386,954. (No model.)

T or whom it may concern.-

Be it known that we, EDWARD L. BowERs andJONAH E. TITUs, citizens of the United States, residing at Orange, county of Franklin, and State of Massachusetts, haveinvented new and useful Improvements in Slotting- Machines, of which the following description, taken in connection with the drawings herewith accompanying, is a specification.

:0 Our invention relates to that class of machines usually provided with a magazine or other receptacle mounted on a cross-slide in which the screws or other pieces to be operated upon are placed, a chuck and mechanr 5 ism for automatically opening and closing the same, and suitable jaws or gripping device carried by the usual turret, monitor, or toolcarrier for removing the screws or other pieces located in the magazine and placing 2a the same in the chuck to be operated upon by suitable tools or mechanism with which the machine may be provided, said parts operating automatically in their relation to each other; and our invention consists in the combination, with a machine provided with mechanism of a character above referred to, of a mechanism constructed to operate in conjunction with said parts, adapted for slotting the heads of screws and other pieces, said 0 mechanism consisting, essentially, of asawin g mechanism carried by the cross-slide, and means for operating said sawing mechanism in a manner which will hereinafter be more fully described, the objects of our invention 3 5 being to provide amachine whereby the screws or other pieces to be slotted may be handled,

presented to the proper tools operated upon,

' and be ejected from the machineautomatically.

Referring to the drawings, Figure 1 represents a side elevation of a machine embody ing our invention; Fig. 2, a cross-section through line 2 2 of Fig. 1, showing the crossslide with the magazine and sawing mechan- 5 ism supported thereon and the mechanism for operating the cross-slide; Fig. 3, a side elevation of the cross-slide with the magazine and sawing mechanism detached from the machine; Fig. 4, a section through line y y of Fig. 3, showing the front end of the sawing mechanism, the spring for elastically holding the same in its normal position, and the end of the chuck broken away with a screw held thereby, showing its relative position to the said saw; Fig. 5, a section through line 3/ y of Fig. 3, showing a side view of the magazine broken away; Fig. 6, a view of the saw audits rotating spindle in detail, showing the construction of the several parts and their mode of connection; and Figs. 7 and 8 represent modification in the construction of the sawing mechanism, as will hereinafterbe described in detail.

To explain in detail, A represents the supporting-frame; B, the'driving-shaft; Dand O, cam-carrying pulleys located on said drivingshaft; E, the sliding carriage supported in ways a e on the frame A and operated by suitable cams located on the pulley D; F, the turret mounted on said sliding carriage; f, the gripping jaws or device carried by said turret;

G, the cross-slide; 1-1, the magazine mounted on said cross-slide; g and the cross-slide, opcrating levers pivoted on the frame A and operated to reciprocate the cross-slide through the medium of the cams located on a disk B, carried by the driving-shaft B, and I the chuck, adapted to be opened andclosed in the usual manner by means of the sliding conical collar 1; and levers 7: i through the medium of the head i and its hollow supportingspindle f.

The construction, arrangement, and operation of the above-mentioned parts being well understood by those skilled in the art and not of our present invention, it is thought to be unnecessary to describe the same in detail herein.

In the present instance, and referring more particularly to Figs. 1, 2, 3, and 4:, we have pivoted to the cross-slide G at a greater or less distance in the rear of the magazine H a frame K, provided with suitable bearings, in which is loosely supported a spindle 7t, arranged at right angles to the chuck I, and 5 provided at one end thereof with a circular saw 7t and at its opposite end with a pulley 70 over which latter the driving-belt (represented at 75) passes to rotate the spindle and the saw supported thereby. The saw 70' is adapted to be secured to the spindle 79, as forward, (an opening in the lower end of the shown in detail in Fig. 6, by means of a magazine allowing of the removal of the screw clamping-nut 70 and is prevented from turntherefrom.) After such movement of the ing in its relation thereto by means of a vpin magazine the gripping-jaws by a movement 70 5 76 connecting the same. WVe also provide the of the sliding carriage E are again carried forsupporting shank or frame of the gripping ward between the magazine and the end of device f, carried by the turret F, with a lug the rotating spindle is to place the screw held or projection f on its under side, in which we thereby in the chuck, (the latter being adaptlocateahorizontally-arranged screw f termed ed to automatically open and close to receive 75 to the feeding-screw, which is adapted (when the screw and allow the same to be ejected the cross-slide G is moved forward to bring therefrom,) after which the gripping-jaws by the saw it in a line central with the middle a movement of the sliding carriage are caused of the screw or other piece held by the chuck to recede, leaving the screw in the chuck to I, as will hereinafter be described) to be carbe operated upon. Thereafter the cross-slide 8o r5 ried forward by a movement of the sliding is again moved forward to bring the rotating carriage E and engage with a shoulder orprosaw in a line central with the screw held in j ection 70 on the pivoted frame K to move the the chuck, and the feeding-screw f 2 by a movelatter toward the chuck I and cause the roment of the sliding carriage is then moved tating saw carried thereby to engage the head forward to engage the shoulder or projection .85 of the screw supported in said chuck and slot .2 on the frame K and push the latter forward the same. Thereafter the feeding-screw f is or toward the chuck to cause the rotating saw adapted to be moved back from engagement carried thereby to engage with and slot the with the frame K or part thereof by a movehead of the screw. The feeding-screw f by ment of the carriage E, and the saw 7a is a movement of the sliding carriage is then 0 moved back from engagement with the head caused to move back from engagement with i of the screw by means of a spring L, which the frame K, and the latter, acted upon by is supportedin asuitable openingin the crossthe spring L, is then moved back to its norslide G (more clearly shown in Figs. 4 and 7) mal position to move the rotating saw from and adapted to exert an elastic pressure on engagement with the screw. The chuck is 5 0 the frame K to hold the saw carried thereby then opened and the screw ejected therefrom. in a normal position away from contact with Referring to Figs. 7 and 8, we have shown the screw or other piece held in the chuck I. our improved mechanism in a slightly-modi- In the instance shown we have located a fied form,as it is obvious that slight changes headed pin at the end of the spring L to form in the construction and arrangement of the loo 3 5 a more desirable bearing to operate against several parts might be made without departthe frame K. The frame K is provided at a ing from the spirit of our invention. In this point below its pivotal connection with the instance we have provided the frame K with cross-slide G with a stop device 70 consisting a tongue or arm 70 adapted to extend within of an adj listing-screw, which is adapted to ena corresponding opening in the crossslide G r05 gage with the cross-slide G to limit the moveto support the frame in lieu of being hinged ment of the frame K when acted upon by the or pivoted thereto, as hereinbefore described. spring L, the object of the stop-screw 70 being The frame when thus supported may be opto allow a greater or less throw of the frame erated in one direction by the feeding-screw K to adjust the position of the saw carried f and in the opposite direction by the spring no 5 thereby in its relation to the chuck and allow L, as hereinbefore described, it being limited sufficient space for the different sizes of screws in its backward movementwhen acted on by or other pieces to be held by the latter. The said spring by means of a nut or shoulder 7r depth of the slot to be out in the head of the located on the end of its supporting-tongue, screw or other piece is determined by the conwhich engages a shoulder g in the said open- 1 I 5 5o tinued forward action of the saw against the ing in the cross-slide. By adjusting the posame, and by adjusting the feeding-screw 7c sition of the nut Won the tongue 10 to engage the forward action of the rotating saw may with the shoulder g sooner or later the movebe adjusted and thereby the depth of slot, as ment of the frame K may be adjusted, as will will be readily understood. be readily understood. We have also shown :20 5 5 The operation of the machine described as in said Fig. 8 a modified means for operating a whole is substantially as follows: The screws the frame K. In this instance we provide the to be slotted are placed in the magazine H, shoulder [C6 on the frame K with a projection and the latter at the proper; time is moved on its upper side and provide the feeding forward in a line between the chuck I and the screw f with a corresponding slot or opening 12 5 6o gripping jaws or devicefby one of the crossin its under side. The parts when thus conslide-operating levers. Thereafter the gripstructed are adapted to operate in their relaping jaws or device f is caused to be moved tion to each other as follows: The feedingforward by the action on the sliding carriage screw is adapted to be carried forward by a E or part thereof of one of its operating-cams movement of the sliding carriage to bring the I 0 and engage the screw in the magazine and slot or opening therein in a line with the prohold the same while the latter is again moved jection on the frame K. The latter is then assess carried forward by a movement of the crossslide to bring the said projection thereon within the slot or opening in the feeding-screw. The latter is then moved forward by the sliding carriage to move the frame K forward and cause the saw carried thereby to engage the head of the screw held in the chuck and slot the same. Thereafter the feeding-screw is caused to recede with the connecting-frame K and draw the saw from engagement with the screw. The frame K is then moved rearwardly to disengage with the feeding-screw and the latter is caused to recede by the action of the sliding carriage. \Vhen the frame K is operated in the last-described manner, the spring L is unnecessary and may be dispensed with, as will be readily understood. The feeding-screw f may be supported in the proper position to engage with the frame K by anysuitable arm or frame projecting from the turret F or sliding carriage E, in lieu of being supported by the gripping device f, as shown, without departing from the spirit of our invention.

It will be readily understood by those skilled in the art that the cross-slide G and the sliding carriage E may be caused to move or operate in their relation to each other, as desired, and at the proper time by properly arranging the opel'atingcains.

Having thus set forth our invention, what we claim as new, and desire to secure by Letters Patent of the United States, is-

1. In amachine for slotting screws and other pieces, the combination, with the supportingframe and a chuck, of a reciprocating crossslide mounted on said supporting-frame, a sawing mechanism carried by said cross-slide, and means for operating said sawing mechanism, substantially as described, and for the purpose set forth.

2. In a machine for slotting screws and other devices, the combination, with a supportingframe, a sliding carriage supported thereon, a chuck, and a reciprocating cross-slide or carriage, of a sawing mechanism movably sup ported by said cross-slide, and means carried by said sliding carriage for operating said sawing mechanism, substantially as and for the purpose set forth.

3. In a machine for slotting screws and other devices, the combination, with a main supporting bed-frame, a sliding carriage mounted thereon, a chuck, and a reciprocating crossslide, of a frame or support hinged to said cross-slide, a rotating spindle provided with a saw carried by said hinged frame, and means carried by said sliding carriage for operating said hinged frame, substantially as described, and for the purpose set forth.

at. In a machine for slotting screws and other pieces, the combination, with a main supporting-frame, a reciprocatingcross-slide provided with a magazine mounted thereon, a chuck, and a sliding carriage carrying a gripping device, of a frame movably supported by the cross-slide, a rotating spindle provided with a saw supported by said movable frame, and means carried by said sliding carriage for vibratin g the said movable frame, substantially as and for the purpose set forth.

5. In a machine for slotting screws and other pieces, a reciprocating cross-slide, a frame movably supported by and in its relation to said cross-slide, a rotating spindle provided with a saw supported by said movable frame, and means for vibrating saidmovable frame, combined substantially as and for the purpose set forth.

6. In a machine for slotting screws and other pieces, a main supporting-frame, a sliding carriage mounted thereon, a reciprocating crossslide, a frame movably supported by said cross-slide, a rotating spindle provided with a saw supported and carried by said movable frame, and means carried by said sliding carriage for operating said movable frame, combined substantially as described, and for the purpose set forth.

7. In a machine for slotting screws and other pieces, a reciprocating crossslide, a frame movably supported by said cross-slide, a rotating spindle provided with a saw, supported by said movable frame, a sliding carriage, and an adjustable device carried by the latter for operating and adjusting the movement of said movable frame, combined substantially as described, and for the purpose set forth.

8. In a machine for slotting screws and other pieces, a reciprocating cross-slide, a frame movably supported by said cross-slide, and a rotating spindle provided with a saw, supported by a movable frame, in combination with a spring carried by said cross-slide, and a device carried by a sliding carriage for operating said movable frame, combined substantially as described, and for the purpose set forth.

9. Ina machine for slotting screws and other pieces, a reciprocating cross-slide, a frame movably supported by said cross-slide, and a rotating spindle provided with a saw, supported by said movable frame, in combination with a spring supported in said cross slide, and an adj ustablefeeding-screw carried by a sliding carriage for operating said movable frame, combined substantially as described, and for the purpose set forth.

10. In a machine for slotting screws and other pieces, a reciprocating cross-slide, a frame movably supported by said cross-slide, a rotating spindle provided with a saw, carried by said movable frame, a stop'screw supported by said movable frame, and means for vibrating the latter, combined substantially as described, and for the purpose set forth.

11. In a machine for slotting screws and other pieces, a reciprocating cross-slide, a frame hinged to said cross-slide, a rotating spindle provided with a saw, carried by said frame, a, stop device supported by said frame, the saw turning in its relation to the latter, a device carried by a sliding carriage, and a combined substantially as described, and for spring for operating said hinged frame, comthe purpose set forth.

bined substantially as described, and for the EDWARD L. BOW-ERS. 5 purpose set forth. J ON AH E. TITUS.

12. A hollow spindle, a saw, means for \Vitnesses: clamping said saw to said spindle, and a pin WALTER L. RANNEY,

connecting said saw and'spindle to prevent GEORGE F. SMITH.v 

